PRESS RELEASE

May 7, 2019

NEW YORK--(BUSINESS WIRE)--
ClearBridge Energy Midstream Opportunity Fund Inc. (NYSE: EMO) announced
today the unaudited statement of assets and liabilities, the net asset
value and asset coverage ratio of the Fund as of April 30, 2019.

As of April 30, 2019, the Fund’s net assets were $772.9 million, and its
net asset value per share was $10.78. The Fund’s asset coverage ratio
under the Investment Company Act of 1940 (the “1940 Act”) with respect
to senior indebtedness was 353% and the Fund’s asset coverage ratio
under the 1940 Act with respect to total leverage was 308%.

As of April 30, 2019

Amount (millions)

Per Share

Investments

$

1,147.5

$

16.00

Cash and Cash Equivalents

1.1

0.01

Other Assets

13.7

0.19

Total Assets

$

1,162.3

$

16.20

Senior Notes*

$

247.0

$

3.44

Loan Outstanding*

77.0

1.07

Mandatory Redeemable Preferred Shares*

48.0

0.67

Total Leverage

$

372.0

$

5.18

Deferred Tax Liability

$

14.2

$

0.20

Other Liabilities

3.2

0.04

Total Liabilities

$

17.4

$

0.24

Net Assets

$

772.9

$

10.78

Outstanding Shares

71,713,987

* The Fund's asset coverage ratio under the 1940 Act with respect to
senior indebtedness was 353%.

* The Fund's asset coverage ratio under the 1940 Act with respect to
total leverage was 308%.

The Fund files its semi-annual and annual reports
with the Securities and Exchange Commission (“SEC”), as well as its
complete schedule of portfolio holdings for the first and third quarters
of each fiscal year as an exhibit to its reports on Form N-PORT.
Previously, the Fund filed a complete schedule of portfolio holdings
with the SEC for the first and third quarters of each fiscal year on
Form N-Q. These reports are available on the SEC’s website at www.sec.gov.
To obtain information on Forms N-PORT and N-Q or a semi-annual or annual
report from the Fund, shareholders can call 1-888-777-0102.

For more information about the Fund, please call 1-888-777-0102 or
consult the Fund’s website at www.lmcef.com.
Hard copies of the Fund’s complete audited financial statements are
available free of charge upon request.

Data and commentary provided in this press release are for informational
purposes only. Legg Mason and its affiliates do not engage in selling
shares of the Fund.

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